Who has been buying The Tochigi Bank, Ltd. stock?

6 distinct investors have filed 13 disclosed large-shareholding filings in The Tochigi Bank, Ltd. (8550), most recently on 2025-05-20. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does The Tochigi Bank, Ltd. have?

The Tochigi Bank, Ltd. has 13 buy-side and 8 sell-side disclosures on record, covering ¥1.9B ($12.2M) in total reported value, spanning 2021-09-22 to 2025-05-20.

Where does StockDrifts get The Tochigi Bank, Ltd. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

The Tochigi Bank, Ltd. 8550

Company

株式会社栃木銀行The Tochigi Bank, Ltd.

Investors

Buys

Total Value

¥1.9B ($12.2M)

Avg Return

+262.01%

Last Filing

2025-05-20

The Tochigi Bank, Ltd. (8550) has 13 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥1.9B ($12.2M) in reported transaction value. The earliest filing StockDrifts holds for The Tochigi Bank, Ltd. is dated 2021-09-22; the most recent is 2025-05-20. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +262.01%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2025-05-20	BUY	Market Buy	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	6.1M	¥351	+180.3%	¥273M ($1.8M)
2025-05-20	BUY	Market Buy	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	2.8M	¥351	+180.3%	¥139M ($894K)
2025-04-21	BUY	Market Buy	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	2.4M	¥286	+244.1%	¥304M ($2.0M)
2025-04-21	BUY	Market Buy	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	5.3M	¥286	+244.1%	¥147M ($951K)
2025-03-05	SELL	unknown	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	1.4M	¥282	-248.9%	¥6M ($40K)
2025-03-05	SELL	unknown	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	4.8M	¥282	-248.9%	¥448M ($2.9M)
2024-08-06	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.6M	¥284	+246.5%	¥463M ($3.0M)
2024-08-06	BUY	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	2.8M	¥284	+246.5%	¥768M ($5.0M)
2024-08-05	BUY	unknown	ウエリントン・マネージメント・インターナショナル・リミテッド Wellington Management International Ltd	other	1.4M	¥260	+278.5%	¥360M ($2.3M)
2024-08-05	BUY	unknown	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	6.4M	¥260	+278.5%	¥1.7B ($10.7M)
2024-07-22	SELL	acquisition	預金保険機構 Deposit Insurance Corporation of Japan	other	4.1M	¥349	-181.9%	¥520M ($3.4M)
2024-07-19	BUY	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.6M	¥354	+178.0%	¥109M ($701K)
2024-07-19	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	6.8M	¥354	-178.0%	¥450M ($2.9M)
2023-07-06	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.3M	¥259	-279.9%	¥51M ($330K)
2023-07-06	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	8.1M	¥259	-279.9%	¥236M ($1.5M)
2023-03-23	SELL	Market Buy	植島幹九郎 Kankuro Ueshima	activist	5.5M	¥267	-268.5%	¥439M ($2.8M)
2023-01-12	SELL	acquisition	預金保険機構 Deposit Insurance Corporation of Japan	other	5.6M	¥312	-215.4%	¥284M ($1.8M)
2022-11-29	BUY	Market Buy	植島幹九郎 Kankuro Ueshima	activist	7.1M	¥343	+186.9%	¥120M ($776K)
2022-11-15	BUY	Market Buy	植島幹九郎 Kankuro Ueshima	activist	6.8M	¥277	+255.2%	¥313M ($2.0M)
2022-11-15	BUY	Market Buy	植島幹九郎 Kankuro Ueshima	activist	6.8M	¥277	+255.2%	¥313M ($2.0M)
2022-10-05	BUY	Market Buy	植島幹九郎 Kankuro Ueshima	activist	5.6M	¥289	+240.5%	¥1.6B ($10.5M)
2021-09-22	BUY	Market Buy	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	1.5M	¥180	+446.7%	¥109M ($700K)
2021-09-22	BUY	Market Buy	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	9.0M	¥180	+446.7%	¥110M ($713K)

Frequently asked questions

Who has been buying The Tochigi Bank, Ltd. stock?: 6 distinct investors have filed 13 disclosed large-shareholding filings in The Tochigi Bank, Ltd. (8550), most recently on 2025-05-20. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does The Tochigi Bank, Ltd. have?: The Tochigi Bank, Ltd. has 13 buy-side and 8 sell-side disclosures on record, covering ¥1.9B ($12.2M) in total reported value, spanning 2021-09-22 to 2025-05-20.
Where does StockDrifts get The Tochigi Bank, Ltd. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for The Tochigi Bank, Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.